CVE-2026-64728

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-07-27. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

A fix is available — apply it.

A permissions issue was addressed with improved validation. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. Maliciously crafted web content may violate iframe sandboxing policy.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

July 27, 2026

Last Modified

July 28, 2026

Advisory Details (6)

Auto-updated Jul 28, 2026
No patch confirmed yet.
generic

About the security content of Safari 26.6 - Apple Support

https://support.apple.com/en-us/128073
generic

About the security content of visionOS 26.6 - Apple Support

https://support.apple.com/en-us/128070
generic

About the security content of tvOS 26.6 - Apple Support

https://support.apple.com/en-us/128069
generic

About the security content of watchOS 26.6 - Apple Support

https://support.apple.com/en-us/128068
generic

About the security content of macOS Tahoe 26.6 - Apple Support

https://support.apple.com/en-us/128067
generic

About the security content of iOS 26.6 and iPadOS 26.6 - Apple Support

https://support.apple.com/en-us/128066

Vendor Advisories for CVE-2026-64728(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuwebkitgtk-webdriver (2.52.6-0ubuntu0.26.04.1) @ resolute2026-09-19ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(6 across 3 ecosystems)
Debian:12(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk2.40.1-1 ... 2.53.91-1 (165 versions)——
wpewebkit2.38.6-1 ... 2.52.6-1 (54 versions)——
Debian:13(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk2.48.3-1 ... 2.52.5-1~deb13u1 (50 versions)2.52.6-1~deb13u1—
wpewebkit2.48.3-1 ... 2.52.6-1 (20 versions)——
Debian:14(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk2.48.3-1 ... 2.52.6-1~deb13u1 (51 versions)2.52.6-1—
wpewebkit2.48.3-1 ... 2.52.5-1 (19 versions)2.52.6-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 24× in last 7d / 88× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 166 total refreshes for this CVE.

  1. 2026-09-19 00:07 UTCEG score recompute
  2. 2026-09-19 00:07 UTCVendor advisory
  3. 2026-09-19 00:07 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 02:13 UTCEG score recompute
  6. 2026-09-18 02:13 UTCVendor advisory
  7. 2026-09-18 02:13 UTCGHSA enrichment
  8. 2026-09-17 04:27 UTCEG score recompute
  9. 2026-09-17 04:27 UTCVendor advisory
  10. 2026-09-17 04:27 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 06:40 UTCEG score recompute
  13. 2026-09-16 06:40 UTCVendor advisory
  14. 2026-09-16 06:40 UTCGHSA enrichment
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-15 09:02 UTCEG score recompute
  17. 2026-09-15 09:02 UTCVendor advisory
  18. 2026-09-15 09:02 UTCGHSA enrichment
  19. 2026-09-14 00:13 UTCEG score recompute
  20. 2026-09-14 00:13 UTCVendor advisory
  21. 2026-09-14 00:13 UTCGHSA enrichment
  22. 2026-09-13 02:34 UTCEG score recompute
  23. 2026-09-13 02:34 UTCVendor advisory
  24. 2026-09-13 02:34 UTCGHSA enrichment
  25. 2026-09-12 04:54 UTCEG score recompute
Show 75 more
  1. 2026-09-12 04:54 UTCVendor advisory
  2. 2026-09-12 04:54 UTCGHSA enrichment
  3. 2026-09-11 14:53 UTCEPSS rescore
  4. 2026-09-11 09:37 UTCEPSS rescore
  5. 2026-09-11 06:58 UTCEG score recompute
  6. 2026-09-11 06:58 UTCVendor advisory
  7. 2026-09-11 06:58 UTCGHSA enrichment
  8. 2026-09-10 08:03 UTCVendor advisory
  9. 2026-09-10 08:03 UTCGHSA enrichment
  10. 2026-09-09 08:16 UTCEG score recompute
  11. 2026-09-09 08:16 UTCVendor advisory
  12. 2026-09-09 08:15 UTCGHSA enrichment
  13. 2026-09-08 22:01 UTCEPSS rescore
  14. 2026-09-07 21:00 UTCEG score recompute
  15. 2026-09-07 21:00 UTCVendor advisory
  16. 2026-09-07 20:59 UTCGHSA enrichment
  17. 2026-09-07 16:01 UTCEPSS rescore
  18. 2026-09-06 13:47 UTCEPSS rescore
  19. 2026-09-06 07:37 UTCEG score recompute
  20. 2026-09-06 07:37 UTCVendor advisory
  21. 2026-09-06 07:37 UTCGHSA enrichment
  22. 2026-09-05 15:31 UTCEPSS rescore
  23. 2026-09-05 09:55 UTCEG score recompute
  24. 2026-09-05 09:55 UTCVendor advisory
  25. 2026-09-05 09:55 UTCGHSA enrichment
  26. 2026-09-04 12:17 UTCEG score recompute
  27. 2026-09-04 12:17 UTCVendor advisory
  28. 2026-09-04 12:17 UTCGHSA enrichment
  29. 2026-09-04 05:07 UTCEPSS rescore
  30. 2026-09-02 14:12 UTCEPSS rescore
  31. 2026-09-01 22:57 UTCEG score recompute
  32. 2026-09-01 22:57 UTCVendor advisory
  33. 2026-09-01 22:57 UTCGHSA enrichment
  34. 2026-09-01 13:54 UTCEPSS rescore
  35. 2026-09-01 04:40 UTCEPSS rescore
  36. 2026-09-01 00:56 UTCVendor advisory
  37. 2026-09-01 00:56 UTCGHSA enrichment
  38. 2026-08-30 21:41 UTCEG score recompute
  39. 2026-08-30 21:41 UTCGHSA enrichment
  40. 2026-08-30 19:17 UTCEPSS rescore
  41. 2026-08-30 01:22 UTCEPSS rescore
  42. 2026-08-29 23:47 UTCEG score recompute
  43. 2026-08-29 23:47 UTCGHSA enrichment
  44. 2026-08-28 21:42 UTCEPSS rescore
  45. 2026-08-27 20:59 UTCEG score recompute
  46. 2026-08-27 20:59 UTCGHSA enrichment
  47. 2026-08-26 19:43 UTCEG score recompute
  48. 2026-08-26 19:43 UTCGHSA enrichment
  49. 2026-08-26 14:47 UTCEPSS rescore
  50. 2026-08-25 18:19 UTCEG score recompute
  51. 2026-08-25 18:19 UTCGHSA enrichment
  52. 2026-08-25 13:49 UTCEPSS rescore
  53. 2026-08-24 20:41 UTCEG score recompute
  54. 2026-08-24 20:40 UTCGHSA enrichment
  55. 2026-08-23 23:02 UTCGHSA enrichment
  56. 2026-08-23 01:23 UTCEG score recompute
  57. 2026-08-23 01:23 UTCGHSA enrichment
  58. 2026-08-23 00:19 UTCEPSS rescore
  59. 2026-08-22 03:45 UTCEG score recompute
  60. 2026-08-22 03:45 UTCGHSA enrichment
  61. 2026-08-21 23:49 UTCEPSS rescore
  62. 2026-08-21 06:06 UTCEG score recompute
  63. 2026-08-21 06:06 UTCGHSA enrichment
  64. 2026-08-20 22:55 UTCEPSS rescore
  65. 2026-08-20 08:27 UTCEG score recompute
  66. 2026-08-20 08:27 UTCGHSA enrichment
  67. 2026-08-19 17:04 UTCEPSS rescore
  68. 2026-08-19 10:48 UTCEG score recompute
  69. 2026-08-19 10:48 UTCGHSA enrichment
  70. 2026-08-18 13:48 UTCEPSS rescore
  71. 2026-08-18 13:10 UTCGHSA enrichment
  72. 2026-08-17 15:30 UTCEG score recompute
  73. 2026-08-17 15:30 UTCGHSA enrichment
  74. 2026-08-17 13:47 UTCEPSS rescore
  75. 2026-08-16 17:52 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-64728?
CVE-2026-64728 is a medium vulnerability published on July 27, 2026. A permissions issue was addressed with improved validation. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. Maliciously crafted web content may violate iframe sandboxing policy.
When was CVE-2026-64728 disclosed?
CVE-2026-64728 was first published in the National Vulnerability Database on July 27, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64728 actively exploited?
CVE-2026-64728 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 68.8% of all scored CVEs.
What is the CVSS score of CVE-2026-64728?
CVE-2026-64728 has a CVSS v3.1 base score of 6.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-64728?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64728, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-64728

Explore →

Is Your Infrastructure Affected by CVE-2026-64728?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs